How do I become an affiliate of WP Security Lock?

Go to http://www.wpsecuritylock.com/affjoin and register.

Upon approval, you earn 50% commission for sales through your affiliate link(s) on any digitally delivered products (Online membership programs, teleseminars, webinars, eBooks, etc) and 10% commission for any WordPress security services. (Please note: This does not include buying for yourself.) Plus, you earn 5% second-tier commission on sales from affiliates that have joined our program through your affiliate link(s).

The minimum payout threshold is $25. No cookie expiration. Affiliate commissions are calculated 60 days of purchase date and paid on the following 15th of the month.